1491204 has 72 divisors (see below), whose sum is σ = 4170880. Its totient is φ = 411840.

The previous prime is 1491199. The next prime is 1491227. The reversal of 1491204 is 4021941.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18837 + ... + 18915.

2^1491204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1491204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085440).

1491204 is an abundant number, since it is smaller than the sum of its proper divisors (2679676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491204 is a wasteful number, since it uses less digits than its factorization.

1491204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1491204 is about 1221.1486396013. The cubic root of 1491204 is about 114.2472319842.

The spelling of 1491204 in words is "one million, four hundred ninety-one thousand, two hundred four".